[ti:UNIT 6 Let's Go! Lesson 48: Unit Review] [00:01.53]UNIT 6 第六单元 [00:03.33]Let's Go! 我们出发吧! [00:05.57]Lesson 48: 第48课: [00:07.23]Unit Review 单元复习 [00:09.79]Ⅲ. [00:11.24]Listening and Speaking 听一听,说一说...